Regenerative Thermal Oxidizer Manufacturer Serving Maine

Manufacturers across Maine rely on CPI for regenerative thermal oxidizers (RTOs), catalytic oxidizers, and thermal oxidizers engineered for VOC compliance. Since 1969, CPI has designed and implemented oxidizer systems nationwide with thermal efficiencies above 97% and destruction removal efficiencies above 99%, backed by aftermarket support performed entirely by CPI's own team.

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Maine Air Permitting: How CPI Supports Your Compliance Process

CPI designs and builds oxidizer systems — we are not a permitting firm, and every Maine facility's permit obligations depend on details specific to that site. Engaging an air permitting professional who is familiar not just with federal requirements, but with Maine's air permitting rules, is strongly recommended.

Here's how CPI fits into that process:

  1. Technical data your permit application will need. Emission rates, destruction/removal efficiency, stack parameters, fuel usage, and control technology specifications, delivered as part of every proposal.
  2. A design matched to your compliance target. Our applications engineering team coordinates with the parties responsible for your permitting so the oxidizer is sized to meet your permit's destruction efficiency and reporting requirements from day one.
  3. Ongoing support once you're operating. Equipment performance data for emissions reporting or agency inspections, whenever your compliance team needs it.
  4. A track record Maine regulators already recognize. CPI oxidizer systems are permitted and operating across Maine, helping our customers stay in compliance with their permit obligations.

Maine Air Permitting Rules for Oxidizers


Supporting Your Project Team

Whether your Maine project runs through an outside environmental consultant, an in-house EHS group, or your engineering team, CPI works alongside them, offering:

  • BACT/MACT analysis support, with the technical data needed to weigh control technology options.
  • A real installation history in Maine that regulators have already reviewed and accepted.
  • Turn-key project support spanning evaluation through commissioning, including installation estimates.
  • A 24-hour Technical Service Group standing by well after startup.

Environmental consultants can find CPI's dedicated resources, including project support details and client examples, here: Environmental Consultant Resources →


"They were always there, always checking up on us, and never seemed to tire of the long evaluation process." — Process Engineer, Specialty Chemical Manufacturer


Aftermarket Service & Support — Maine

CPI's aftermarket service is performed by direct CPI employees — not third-party contractors — so Maine facilities get factory-trained technicians who know CPI equipment inside and out.

  • Service performed by CPI's own technicians
  • Preventive maintenance
  • Emergency service, including 24/7 phone support
  • Annual inspections and testing support, helping facilities meet inspection or maintenance requirements that may be specified in their air permit

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Frequently Asked Questions

Can CPI manufacture a regenerative thermal oxidizer for a Maine facility?

Yes. CPI designs and manufactures custom RTOs, catalytic oxidizers, and thermal oxidizers for Maine manufacturers, built on successful implementations throughout Maine and nationwide.

Are there CPI oxidizers already running in Maine today?

Yes — CPI oxidizer systems are installed and operating at Maine facilities, permitted and accepted by Maine DEP. That in-state history means Maine regulators are already familiar with how CPI designs and documents its systems.

Why does Maine DEP use the word "license" instead of "permit"?

It's simply Maine's own regulatory terminology — a Minor Source or Major Source Air Emission License functions the same way an air permit does in other states. Your permitting consultant, EHS team, or engineering group can confirm which license type applies to your project.

Will CPI service equipment it didn't originally manufacture?

Yes. CPI services most makes and models of regenerative thermal oxidizers, catalytic oxidizers, and thermal oxidizers, not only the systems we built ourselves.

Does CPI manage Maine DEP permitting on our behalf?

No. CPI is not a permitting firm. We recommend confirming your specific requirements with an environmental consultant, EHS resource, or engineering team - CPI's role is supplying the oxidizer information that process depends on.

Is CPI a resource for environmental consultants working on Maine projects?

Yes. CPI works closely with environmental consultants on BACT/MACT analysis and project support, backed by a proven track record of oxidizers already operating in Maine.


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See where CPI provides oxidizer aftermarket service by state: CPI RTO Nationwide Support — All Locations

CPI's Core Technology:
Regenerative Thermal Oxidizers | Thermal Oxidizers | Catalytic Oxidizers

For Environmental Consultants, EHS & Engineering Teams:
Environmental Consultant Resources & Support →

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